Runner, spectator get photos of marathon suspects

This Monday, April 15, 2013 photo provided by Bob Leonard shows second from left, Tamerlan Tsarnaev, who was dubbed Suspect No. 1 and third from left, Dzhokhar A. Tsarnaev, who was dubbed Suspect No. 2 in the Boston Marathon bombings by law enforcement. This image was taken approximately 10-20 minutes before the blast. (AP Photo/Bob Leonard)

This Monday, April 15, 2013 photo provided by Bob Leonard shows second from right, Tamerlan Tsarnaev, who was dubbed Suspect No. 1 and third from right, Dzhokhar A. Tsarnaev, who was dubbed Suspect No. 2 in the Boston Marathon bombings by law enforcement. This image was taken approximately 10-20 minutes before the blast. (AP Photo/Bob Leonard)

This Monday, April 15, 2013 photo provided by Bob Leonard shows top left center, Tamerlan Tsarnaev, who was dubbed Suspect No. 1 and behind him, Dzhokhar A. Tsarnaev, who was dubbed Suspect No. 2 in the Boston Marathon bombings by law enforcement. This image was taken approximately 10-20 minutes before the blast. (AP Photo/Bob Leonard)

This Monday, April 15, 2013 photo provided by Bob Leonard shows second from right, Tamerlan Tsarnaev, who was dubbed Suspect No. 1 and walking behind him, Dzhokhar A. Tsarnaev, who was dubbed Suspect No. 2 in the Boston Marathon bombings by law enforcement. This image was taken approximately 10-20 minutes before the blast. (AP Photo/Bob Leonard)

This Monday, April 15, 2013 photo provided by Bob Leonard shows second from top left, Tamerlan Tsarnaev, who was dubbed Suspect No. 1 and third from top left, Dzhokhar A. Tsarnaev, who was dubbed Suspect No. 2 in the Boston Marathon bombings by law enforcement. This image was taken approximately 10-20 minutes before the blast. (AP Photo/Bob Leonard)

This Monday, April 15, 2013 photo provided by Bob Leonard shows Tamerlan Tsarnaev, who was dubbed Suspect No. 1 and Dzhokhar A. Tsarnaev, who was dubbed Suspect No. 2 in the Boston Marathon bombings by law enforcement. This image was taken approximately 10-20 minutes before the blast. (AP Photo/Bob Leonard)

This Monday, April 15, 2013 photo provided by Bob Leonard shows Tamerlan Tsarnaev, who was dubbed Suspect No. 1 and Dzhokhar A. Tsarnaev, who was dubbed Suspect No. 2 in the Boston Marathon bombings by law enforcement. This image was taken approximately 10-20 minutes before the blast. (AP Photo/Bob Leonard)

David Green holds up his iPhone with a photo on it he took after the Boston Marathon bombing Friday, April 19, 2013, at his home in Jacksonville, Fla. Seconds after the Boston Marathon bombs exploded, Green pulled out his smartphone and took the photo of the chaos developing a couple hundred yards in front of him -- the smoke, the people running in panic. The Jacksonville businessman then put his phone back in this pocket and went to help the injured. It wasnt until Thursday that Green realized what he had  a picture of suspect Dzhokhar A. Tsarnaev, distinctive in his backward white baseball cap, walking away from the scene. (AP Photo/Phil Sears)